condition mean min max ZT0-3 323.847 323.847 323.847 ZT4-7 289.198 289.198 289.198 ZT8-11 337.0325 337.0325 337.0325 ZT12-15 261.05899999999997 261.05899999999997 261.05899999999997 ZT16-19 421.2355 421.2355 421.2355 ZT20-23 329.59299999999996 329.59299999999996 329.59299999999996